Commit Graph

1351962 Commits

Author SHA1 Message Date
Marc Zyngier
3164899c21 KVM: arm64: Add description of FGT bits leading to EC!=0x18
The current FTP tables are only concerned with the bits generating
ESR_ELx.EC==0x18. However, we want an exhaustive view of what KVM
really knows about.

So let's add another small table that provides that extra information.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:25 +01:00
Marc Zyngier
1b8570be89 KVM: arm64: Compute FGT masks from KVM's own FGT tables
In the process of decoupling KVM's view of the FGT bits from the
wider architectural state, use KVM's own FGT tables to build
a synthetic view of what is actually known.

This allows for some checking along the way.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:19 +01:00
Marc Zyngier
5329358c22 KVM: arm64: Plug FEAT_GCS handling
We don't seem to be handling the GCS-specific exception class.
Handle it by delivering an UNDEF to the guest, and populate the
relevant trap bits.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:19 +01:00
Marc Zyngier
09be03c6b5 KVM: arm64: Don't treat HCRX_EL2 as a FGT register
Treating HCRX_EL2 as yet another FGT register seems excessive, and
gets in a way of further improvements. It is actually simpler to
just be explicit about the masking, so just to that.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:19 +01:00
Marc Zyngier
9308d0b1d7 KVM: arm64: Restrict ACCDATA_EL1 undef to FEAT_LS64_ACCDATA being disabled
We currently unconditionally make ACCDATA_EL1 accesses UNDEF.

As we are about to support it, restrict the UNDEF behaviour to cases
where FEAT_LS64_ACCDATA is not exposed to the guest.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:19 +01:00
Marc Zyngier
2e04378f1a KVM: arm64: Handle trapping of FEAT_LS64* instructions
We generally don't expect FEAT_LS64* instructions to trap, unless
they are trapped by a guest hypervisor.

Otherwise, this is just the guest playing tricks on us by using
an instruction that isn't advertised, which we handle with a well
deserved UNDEF.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:14 +01:00
Marc Zyngier
4b4af68dd9 KVM: arm64: Simplify handling of negative FGT bits
check_fgt_bit() and triage_sysreg_trap() implement the same thing
twice for no good reason. We have to lookup the FGT register twice,
as we don't communicate it. Similarly, we extract the register value
at the wrong spot.

Reorganise the code in a more logical way so that things are done
at the correct location, removing a lot of duplication.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:09 +01:00
Marc Zyngier
04af8a3968 KVM: arm64: Tighten handling of unknown FGT groups
triage_sysreg_trap() assumes that it knows all the possible values
for FGT groups, which won't be the case as we start adding more
FGT registers (unless we add everything in one go, which is obviously
undesirable).

At the same time, it doesn't offer much in terms of debugging info
when things go wrong.

Turn the "__NR_FGT_GROUP_IDS__" case into a default, covering any
unhandled value, and give the kernel hacker a bit of a clue about
what's wrong (system register and full trap descriptor).

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:09 +01:00
Marc Zyngier
fbc8a4e137 arm64: Add FEAT_FGT2 capability
As we will eventually have to context-switch the FEAT_FGT2 registers
in KVM (something that has been completely ignored so far), add
a new cap that we will be able to check for.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:09 +01:00
Marc Zyngier
7c7d56fceb arm64: Add syndrome information for trapped LD64B/ST64B{,V,V0}
Provide the architected EC and ISS values for all the FEAT_LS64*
instructions.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
3654f454bc arm64: tools: Resync sysreg.h
Perform a bulk resync of tools/arch/arm64/include/asm/sysreg.h.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
7a11d98d6e arm64: Remove duplicated sysreg encodings
A bunch of sysregs are now generated from the sysreg file, so no
need to carry separate definitions.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
7c9cb893ae arm64: sysreg: Add system instructions trapped by HFGIRT2_EL2
Add the new CMOs trapped by HFGITR2_EL2.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
dd161dc2df arm64: sysreg: Add registers trapped by HDFG{R,W}TR2_EL2
Bulk addition of all the system registers trapped by HDFG{R,W}TR2_EL2.

The descriptions are extracted from the BSD-licenced JSON file part
of the 2025-03 drop from ARM.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
0be91cfbfd arm64: sysreg: Add registers trapped by HFG{R,W}TR2_EL2
Bulk addition of all the system registers trapped by HFG{R,W}TR2_EL2.

The descriptions are extracted from the BSD-licenced JSON file part
of the 2025-03 drop from ARM.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
f062c19a93 arm64: sysreg: Update CPACR_EL1 description
Add the couple of fields introduced with FEAT_NV2p1.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
4533a0238d arm64: sysreg: Update TRBIDR_EL1 description
Add the missing MPAM field.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
894f2841f5 arm64: sysreg: Update PMSIDR_EL1 description
Add the missing SME, ALTCLK, FPF, EFT. CRR and FDS fields.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
9d737fddc9 arm64: sysreg: Update ID_AA64PFR0_EL1 description
Add the missing RASv2 description.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
0f013a524b arm64: sysreg: Replace HFGxTR_EL2 with HFG{R,W}TR_EL2
Treating HFGRTR_EL2 and HFGWTR_EL2 identically was a mistake.
It makes things hard to reason about, has the potential to
introduce bugs by giving a meaning to bits that are really reserved,
and is in general a bad description of the architecture.

Given that #defines are cheap, let's describe both registers as
intended by the architecture, and repaint all the existing uses.

Yes, this is painful.

The registers themselves are generated from the JSON file in
an automated way.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:35:03 +01:00
Marc Zyngier
d0f39259ef arm64: sysreg: Add layout for HCR_EL2
Add HCR_EL2 to the sysreg file, more or less directly generated
from the JSON file.

Since the generated names significantly differ from the existing
naming, express the old names in terms of the new one. One day, we'll
fix this mess, but I'm not in any hurry.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:34:57 +01:00
Marc Zyngier
eef33835bf arm64: sysreg: Update ID_AA64MMFR4_EL1 description
Resync the ID_AA64MMFR4_EL1 with the architectue description.

This results in:

- the new PoPS field
- the new NV2P1 value for the NV_frac field
- the new RMEGDI field
- the new SRMASK field

These fields have been generated from the reference JSON file.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:34:51 +01:00
Marc Zyngier
2030396dac arm64: sysreg: Add ID_AA64ISAR1_EL1.LS64 encoding for FEAT_LS64WB
The 2024 extensions are adding yet another variant of LS64
(aptly named FEAT_LS64WB) supporting LS64 accesses to write-back
memory, as well as 32 byte single-copy atomic accesses using pairs
of FP registers.

Add the relevant encoding to ID_AA64ISAR1_EL1.LS64.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-06 17:34:40 +01:00
Linus Torvalds
9c32cda43e Linux 6.15-rc3 2025-04-20 13:43:47 -07:00
Linus Torvalds
ac71fabf15 gcc-15: work around sequence-point warning
The C sequence points are complicated things, and gcc-15 has apparently
added a warning for the case where an object is both used and modified
multiple times within the same sequence point.

That's a great warning.

Or rather, it would be a great warning, except gcc-15 seems to not
really be very exact about it, and doesn't notice that the modification
are to two entirely different members of the same object: the array
counter and the array entries.

So that seems kind of silly.

That said, the code that gcc complains about is unnecessarily
complicated, so moving the array counter update into a separate
statement seems like the most straightforward fix for these warnings:

  drivers/net/wireless/intel/iwlwifi/mld/d3.c: In function ‘iwl_mld_set_netdetect_info’:
  drivers/net/wireless/intel/iwlwifi/mld/d3.c:1102:66: error: operation on ‘netdetect_info->n_matches’ may be undefined [-Werror=sequence-point]
   1102 |                 netdetect_info->matches[netdetect_info->n_matches++] = match;
        |                                         ~~~~~~~~~~~~~~~~~~~~~~~~~^~

  drivers/net/wireless/intel/iwlwifi/mld/d3.c:1120:58: error: operation on ‘match->n_channels’ may be undefined [-Werror=sequence-point]
   1120 |                         match->channels[match->n_channels++] =
        |                                         ~~~~~~~~~~~~~~~~~^~

side note: the code at that second warning is actively buggy, and only
works on little-endian machines that don't do strict alignment checks.

The code casts an array of integers into an array of unsigned long in
order to use our bitmap iterators.  That happens to work fine on any
sane architecture, but it's still wrong.

This does *not* fix that more serious problem.  This only splits the two
assignments into two statements and fixes the compiler warning.  I need
to get rid of the new warnings in order to be able to actually do any
build testing.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-20 11:57:54 -07:00
Linus Torvalds
05e8d261a3 gcc-15: add '__nonstring' markers to byte arrays
All of these cases are perfectly valid and good traditional C, but hit
by the "you're not NUL-terminating your byte array" warning.

And none of the cases want any terminating NUL character.

Mark them __nonstring to shut up gcc-15 (and in the case of the ak8974
magnetometer driver, I just removed the explicit array size and let gcc
expand the 3-byte and 6-byte arrays by one extra byte, because it was
the simpler change).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-20 11:57:54 -07:00
Linus Torvalds
be913e7c40 gcc-15: get rid of misc extra NUL character padding
This removes two cases of explicit NUL padding that now causes warnings
because of '-Wunterminated-string-initialization' being part of -Wextra
in gcc-15.

Gcc is being silly in this case when it says that it truncates a NUL
terminator, because in these cases there were _multiple_ NUL characters.

But we can get rid of the warning by just simplifying the two
initializers that trigger the warning for me, so this does exactly that.

I'm not sure why the power supply code did that odd

    .attr_name = #_name "\0",

pattern: it was introduced in commit 2cabeaf151 ("power: supply: core:
Cleanup power supply sysfs attribute list"), but that 'attr_name[]'
field is an explicitly sized character array in a statically initialized
variable, and a string initializer always has a terminating NUL _and_
statically initialized character arrays are zero-padded anyway, so it
really seems to be rather extraneous belt-and-suspenders.

The zero_uuid[16] initialization in drivers/md/bcache/super.c makes
perfect sense, but it isn't necessary for the same reasons, and not
worth the new gcc warning noise.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-20 11:57:54 -07:00
Linus Torvalds
4b4bd8c50f gcc-15: acpi: sprinkle random '__nonstring' crumbles around
This is not great: I'd much rather introduce a typedef that is a "ACPI
name byte buffer", and use that to mark these special 4-byte ACPI names
that do not use NUL termination.

But as noted in the previous commit ("gcc-15: make 'unterminated string
initialization' just a warning") gcc doesn't actually seem to support
that notion, so instead you have to just mark every single array
declaration individually.

So this is not pretty, but this gets rid of the bulk of the annoying
warnings during an allmodconfig build for me.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-20 11:57:54 -07:00
Linus Torvalds
d5d45a7f26 gcc-15: make 'unterminated string initialization' just a warning
gcc-15 enabling -Wunterminated-string-initialization in -Wextra by
default was done with the best intentions, but the warning is still
quite broken.

What annoys me about the warning is that this is a very traditional AND
CORRECT way to initialize fixed byte arrays in C:

	unsigned char hex[16] = "0123456789abcdef";

and we use this all over the kernel.  And the warning is fine, but gcc
developers apparently never made a reasonable way to disable it.  As is
(sadly) tradition with these things.

Yes, there's "__attribute__((nonstring))", and we have a macro to make
that absolutely disgusting syntax more palatable (ie the kernel syntax
for that monstrosity is just "__nonstring").

But that attribute is misdesigned.  What you'd typically want to do is
tell the compiler that you are using a type that isn't a string but a
byte array, but that doesn't work at all:

	warning: ‘nonstring’ attribute does not apply to types [-Wattributes]

and because of this fundamental mis-design, you then have to mark each
instance of that pattern.

This is particularly noticeable in our ACPI code, because ACPI has this
notion of a 4-byte "type name" that gets used all over, and is exactly
this kind of byte array.

This is a sad oversight, because the warning is useful, but really would
be so much better if gcc had also given a sane way to indicate that we
really just want a byte array type at a type level, not the broken "each
and every array definition" level.

So now instead of creating a nice "ACPI name" type using something like

	typedef char acpi_name_t[4] __nonstring;

we have to do things like

	char name[ACPI_NAMESEG_SIZE] __nonstring;

in every place that uses this concept and then happens to have the
typical initializers.

This is annoying me mainly because I think the warning _is_ a good
warning, which is why I'm not just turning it off in disgust.  But it is
hampered by this bad implementation detail.

[ And obviously I'm doing this now because system upgrades for me are
  something that happen in the middle of the release cycle: don't do it
  before or during travel, or just before or during the busy merge
  window period. ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-04-20 11:57:54 -07:00
Linus Torvalds
6fea5fabd3 16 hotfixes. 2 are cc:stable and the remainder address post-6.14 issues
or aren't considered necessary for -stable kernels.
 
 All patches are basically for MM although five are alterations to
 MAINTAINERS.
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Merge tag 'mm-hotfixes-stable-2025-04-19-21-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc hotfixes from Andrew Morton:
 "16 hotfixes. 2 are cc:stable and the remainder address post-6.14
  issues or aren't considered necessary for -stable kernels.

  All patches are basically for MM although five are alterations to
  MAINTAINERS"

[ Basic counting skills are clearly not a strictly necessary requirement
  for kernel maintainers.     - Linus ]

* tag 'mm-hotfixes-stable-2025-04-19-21-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  MAINTAINERS: add section for locking of mm's and VMAs
  mm: vmscan: fix kswapd exit condition in defrag_mode
  mm: vmscan: restore high-cpu watermark safety in kswapd
  MAINTAINERS: add Pedro as reviewer to the MEMORY MAPPING section
  mm/memory: move sanity checks in do_wp_page() after mapcount vs. refcount stabilization
  mm, hugetlb: increment the number of pages to be reset on HVO
  writeback: fix false warning in inode_to_wb()
  docs: ABI: replace mcroce@microsoft.com with new Meta address
  mm/gup: fix wrongly calculated returned value in fault_in_safe_writeable()
  MAINTAINERS: add memory advice section
  MAINTAINERS: add mmap trace events to MEMORY MAPPING
  mm: memcontrol: fix swap counter leak from offline cgroup
  MAINTAINERS: add MM subsection for the page allocator
  MAINTAINERS: update SLAB ALLOCATOR maintainers
  fs/dax: fix folio splitting issue by resetting old folio order + _nr_pages
  mm/page_alloc: fix deadlock on cpu_hotplug_lock in __accept_page()
2025-04-19 21:46:58 -07:00
Linus Torvalds
119009db26 vfs-6.15-rc3.fixes.2
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Merge tag 'vfs-6.15-rc3.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:

 - Revert the hfs{plus} deprecation warning that's also included in this
   pull request. The commit introducing the deprecation warning resides
   rather early in this branch. So simply dropping it would've rebased
   all other commits which I decided to avoid. Hence the revert in the
   same branch

   [ Background - the deprecation warning discussion resulted in people
     stepping up, and so hfs{plus} will have a maintainer taking care of
     it after all..   - Linus ]

 - Switch CONFIG_SYSFS_SYCALL default to n and decouple from
   CONFIG_EXPERT

 - Fix an audit bug caused by changes to our kernel path lookup helpers
   this cycle. Audit needs the parent path even if the dentry it tried
   to look up is negative

 - Ensure that the kernel path lookup helpers leave the passed in path
   argument clean when they return an error. This is consistent with all
   our other helpers

 - Ensure that vfs_getattr_nosec() calls bdev_statx() so the relevant
   information is available to kernel consumers as well

 - Don't set a timer and call schedule() if the timer will expire
   immediately in epoll

 - Make netfs lookup tables with __nonstring

* tag 'vfs-6.15-rc3.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  Revert "hfs{plus}: add deprecation warning"
  fs: move the bdex_statx call to vfs_getattr_nosec
  netfs: Mark __nonstring lookup tables
  eventpoll: Set epoll timeout if it's in the future
  fs: ensure that *path_locked*() helpers leave passed path pristine
  fs: add kern_path_locked_negative()
  hfs{plus}: add deprecation warning
  Kconfig: switch CONFIG_SYSFS_SYCALL default to n
2025-04-19 14:31:08 -07:00
Linus Torvalds
6fe8131757 i2c-for-6.15-rc3
- Address translator: fix wrong include
 - ChromeOS EC tunnel: fix potential NULL pointer dereference
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Merge tag 'i2c-for-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - Address translator: fix wrong include

 - ChromeOS EC tunnel: fix potential NULL pointer dereference

* tag 'i2c-for-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: atr: Fix wrong include
  i2c: cros-ec-tunnel: defer probe if parent EC is not present
2025-04-19 13:59:04 -07:00
Christian Brauner
408e4504f9
Revert "hfs{plus}: add deprecation warning"
This reverts commit ddee68c499.

There's ongoing discussion about better maintenance of at least hfsplus.
Rever the deprecation warning for now.

Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-04-19 22:48:59 +02:00
Linus Torvalds
fa6ad96dca tracing fixes for v6.15
- Initialize hash variables in ftrace subops logic
 
   The fix that simplified the ftrace subops logic opened a path where some
   variables could be used without being initialized, and done subtly where
   the compiler did not catch it. Initialize those variables to the
   EMPTY_HASH, which is the default hash.
 
 - Reinitialize the hash pointers after they are freed
 
   Some of the hash pointers in the subop logic were freed but may still be
   referenced later. To prevent use-after-free bugs, initialize them back to
   the EMPTY_HASH.
 
 - Free the ftrace hashes when they are replaced
 
   The fix that simplified the subops logic updated some hash pointers, but
   left the original hash that they were pointing to where they are no longer
   used. This caused a memory leak. Free the hashes that are pointed to by
   the pointers when they are replaced.
 
 - Fix size initialization of ftrace direct function hash
 
   The ftrace direct function hash used by BPF initialized the hash size
   incorrectly. It checked the size of items to a hard coded 32, which made
   the hash bit size of 5. The hash size is supposed to be limited by the bit
   size of the hash, as the bitmask is allowed to be greater than 5. Rework
   the size check to first pass the number of elements to fls() and then
   compare that to FTRACE_HASH_MAX_BITS before allocating the hash.
 
 - Fix format output of ftrace_graph_ent_entry event
 
   The field depth of the ftrace_graph_ent_entry event is of size 4 but the
   output showed it as unsigned long and use "%lu". Change it to unsigned int
   and use "%u" in the print format that is displayed to user space.
 
 - Fix the trace event filter on strings
 
   Events can be filtered on numbers or string values. The return value
   checked from strncpy_from_kernel_nofault() and strncpy_from_user_nofault()
   was used to determine if reading the strings would fault or not. It would
   return fault if the value was non zero, which is basically meant that it
   was always considering the read as a fault.
 
 - Add selftest to test trace event string filtering
 
   In order to catch the breakage of the string filtering, add a self test to
   make sure that it continues to work.
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Merge tag 'trace-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Initialize hash variables in ftrace subops logic

   The fix that simplified the ftrace subops logic opened a path where
   some variables could be used without being initialized, and done
   subtly where the compiler did not catch it. Initialize those
   variables to the EMPTY_HASH, which is the default hash.

 - Reinitialize the hash pointers after they are freed

   Some of the hash pointers in the subop logic were freed but may still
   be referenced later. To prevent use-after-free bugs, initialize them
   back to the EMPTY_HASH.

 - Free the ftrace hashes when they are replaced

   The fix that simplified the subops logic updated some hash pointers,
   but left the original hash that they were pointing to where they are
   no longer used. This caused a memory leak. Free the hashes that are
   pointed to by the pointers when they are replaced.

 - Fix size initialization of ftrace direct function hash

   The ftrace direct function hash used by BPF initialized the hash size
   incorrectly. It checked the size of items to a hard coded 32, which
   made the hash bit size of 5. The hash size is supposed to be limited
   by the bit size of the hash, as the bitmask is allowed to be greater
   than 5. Rework the size check to first pass the number of elements to
   fls() and then compare that to FTRACE_HASH_MAX_BITS before allocating
   the hash.

 - Fix format output of ftrace_graph_ent_entry event

   The field depth of the ftrace_graph_ent_entry event is of size 4 but
   the output showed it as unsigned long and use "%lu". Change it to
   unsigned int and use "%u" in the print format that is displayed to
   user space.

 - Fix the trace event filter on strings

   Events can be filtered on numbers or string values. The return value
   checked from strncpy_from_kernel_nofault() and
   strncpy_from_user_nofault() was used to determine if reading the
   strings would fault or not. It would return fault if the value was
   non zero, which is basically meant that it was always considering the
   read as a fault.

 - Add selftest to test trace event string filtering

   In order to catch the breakage of the string filtering, add a self
   test to make sure that it continues to work.

* tag 'trace-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: selftests: Add testing a user string to filters
  tracing: Fix filter string testing
  ftrace: Fix type of ftrace_graph_ent_entry.depth
  ftrace: fix incorrect hash size in register_ftrace_direct()
  ftrace: Free ftrace hashes after they are replaced in the subops code
  ftrace: Reinitialize hash to EMPTY_HASH after freeing
  ftrace: Initialize variables for ftrace_startup/shutdown_subops()
2025-04-19 11:57:36 -07:00
Linus Torvalds
1ca0f935a1 nfsd-6.15 fixes:
- v6.15 libcrc clean-up makes invalid configurations possible
 - Fix a potential deadlock introduced during the v6.15 merge window
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Merge tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:

 - v6.15 libcrc clean-up makes invalid configurations possible

 - Fix a potential deadlock introduced during the v6.15 merge window

* tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: decrease sc_count directly if fail to queue dl_recall
  nfs: add missing selections of CONFIG_CRC32
2025-04-19 10:38:03 -07:00
Linus Torvalds
0bd2f269ae Rust fixes for v6.15
Toolchain and infrastructure:
 
  - Fix missing KASAN LLVM flags on first build (and fix spurious
    rebuilds) by skipping '--target'.
 
  - Fix Make < 4.3 build error by using '$(pound)'.
 
  - Fix UML build error by removing 'volatile' qualifier from io helpers.
 
  - Fix UML build error by adding 'dma_{alloc,free}_attrs()'  helpers.
 
  - Clean gendwarfksyms warnings by avoiding to export '__pfx' symbols.
 
  - Clean objtool warning by adding a new 'noreturn' function for 1.86.0.
 
  - Disable 'needless_continue' Clippy lint due to new 1.86.0 warnings.
 
  - Add missing 'ffi' crate to 'generate_rust_analyzer.py'.
 
 'pin-init' crate:
 
  - Import a couple fixes from upstream.
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Merge tag 'rust-fixes-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

Pull rust fixes from Miguel Ojeda:
 "Toolchain and infrastructure:

   - Fix missing KASAN LLVM flags on first build (and fix spurious
     rebuilds) by skipping '--target'

   - Fix Make < 4.3 build error by using '$(pound)'

   - Fix UML build error by removing 'volatile' qualifier from io
     helpers

   - Fix UML build error by adding 'dma_{alloc,free}_attrs()' helpers

   - Clean gendwarfksyms warnings by avoiding to export '__pfx' symbols

   - Clean objtool warning by adding a new 'noreturn' function for
     1.86.0

   - Disable 'needless_continue' Clippy lint due to new 1.86.0 warnings

   - Add missing 'ffi' crate to 'generate_rust_analyzer.py'

  'pin-init' crate:

   - Import a couple fixes from upstream"

* tag 'rust-fixes-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  rust: helpers: Add dma_alloc_attrs() and dma_free_attrs()
  rust: helpers: Remove volatile qualifier from io helpers
  rust: kbuild: use `pound` to support GNU Make < 4.3
  objtool/rust: add one more `noreturn` Rust function for Rust 1.86.0
  rust: kasan/kbuild: fix missing flags on first build
  rust: disable `clippy::needless_continue`
  rust: kbuild: Don't export __pfx symbols
  rust: pin-init: use Markdown autolinks in Rust comments
  rust: pin-init: alloc: restrict `impl ZeroableOption` for `Box` to `T: Sized`
  scripts: generate_rust_analyzer: Add ffi crate
2025-04-19 10:02:43 -07:00
Linus Torvalds
51c7960b87 drm fixes for 6.15-rc3
dma-buf:
 - Correctly decrement refcounter on errors
 
 gem:
 - Fix test for imported buffers
 
 amdgpu:
 - Cleaner shader sysfs fix
 - Suspend fix
 - Fix doorbell free ordering
 - Video caps fix
 - DML2 memory allocation optimization
 - HDP fix
 
 i915:
 - Fix DP DSC configurations that require 3 DSC engines per pipe
 
 xe:
 - Fix LRC address being written too late for GuC
 - Fix notifier vs folio deadlock
 - Fix race betwen dma_buf unmap and vram eviction
 - Fix debugfs handling PXP terminations unconditionally
 
 msm:
 - Display:
   - Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
     case of multi-rect
   - Fix to validate plane_state pointer before using it in
     dpu_plane_virtual_atomic_check()
   - Fix to make sure dereferencing dpu_encoder_phys happens after
     making sure it is valid in _dpu_encoder_trigger_start()
   - Remove the remaining intr_tear_rd_ptr which we initialized
     to -1 because NO_IRQ indices start from 0 now
 - GPU:
   - Fix IB_SIZE overflow
 
 ivpu:
 - Fix debugging
 - Fixes to frequency
 - Support firmware API 3.28.3
 - Flush jobs upon reset
 
 mgag200:
 - Set vblank start to correct values
 
 v3d:
 - Fix Indirect Dispatch
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Merge tag 'drm-fixes-2025-04-19' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Easter rc3 pull request, fixes in all the usuals, amdgpu, xe, msm,
  with some i915/ivpu/mgag200/v3d fixes, then a couple of bits in
  dma-buf/gem.

  Hopefully has no easter eggs in it.

  dma-buf:
   - Correctly decrement refcounter on errors

  gem:
   - Fix test for imported buffers

  amdgpu:
   - Cleaner shader sysfs fix
   - Suspend fix
   - Fix doorbell free ordering
   - Video caps fix
   - DML2 memory allocation optimization
   - HDP fix

  i915:
   - Fix DP DSC configurations that require 3 DSC engines per pipe

  xe:
   - Fix LRC address being written too late for GuC
   - Fix notifier vs folio deadlock
   - Fix race betwen dma_buf unmap and vram eviction
   - Fix debugfs handling PXP terminations unconditionally

  msm:
   - Display:
       - Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
         case of multi-rect
       - Fix to validate plane_state pointer before using it in
         dpu_plane_virtual_atomic_check()
       - Fix to make sure dereferencing dpu_encoder_phys happens after
         making sure it is valid in _dpu_encoder_trigger_start()
       - Remove the remaining intr_tear_rd_ptr which we initialized to
         -1 because NO_IRQ indices start from 0 now
   - GPU:
       - Fix IB_SIZE overflow

  ivpu:
   - Fix debugging
   - Fixes to frequency
   - Support firmware API 3.28.3
   - Flush jobs upon reset

  mgag200:
   - Set vblank start to correct values

  v3d:
   - Fix Indirect Dispatch"

* tag 'drm-fixes-2025-04-19' of https://gitlab.freedesktop.org/drm/kernel: (26 commits)
  drm/msm/a6xx+: Don't let IB_SIZE overflow
  drm/xe/pxp: do not queue unneeded terminations from debugfs
  drm/xe/dma_buf: stop relying on placement in unmap
  drm/xe/userptr: fix notifier vs folio deadlock
  drm/xe: Set LRC addresses before guc load
  drm/mgag200: Fix value in <VBLKSTR> register
  drm/gem: Internally test import_attach for imported objects
  drm/amdgpu: Use the right function for hdp flush
  drm/amd/display/dml2: use vzalloc rather than kzalloc
  drm/amdgpu: Add back JPEG to video caps for carrizo and newer
  drm/amdgpu: fix warning of drm_mm_clean
  drm/amd: Forbid suspending into non-default suspend states
  drm/amdgpu: use a dummy owner for sysfs triggered cleaner shaders v4
  drm/i915/dp: Check for HAS_DSC_3ENGINES while configuring DSC slices
  drm/i915/display: Add macro for checking 3 DSC engines
  dma-buf/sw_sync: Decrement refcount on error in sw_sync_ioctl_get_deadline()
  accel/ivpu: Add cmdq_id to job related logs
  accel/ivpu: Show NPU frequency in sysfs
  accel/ivpu: Fix the NPU's DPU frequency calculation
  accel/ivpu: Update FW Boot API to version 3.28.3
  ...
2025-04-19 09:31:21 -07:00
Dave Airlie
0467145fab Merge tag 'drm-msm-fixes-2025-04-18' of https://gitlab.freedesktop.org/drm/msm into drm-fixes
Fixes for v6.15-rc3

Display:
- Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
  case of multi-rect
- Fix to validate plane_state pointer before using it in
  dpu_plane_virtual_atomic_check()
- Fix to make sure dereferencing dpu_encoder_phys happens after
  making sure it is valid in _dpu_encoder_trigger_start()
- Remove the remaining intr_tear_rd_ptr which we initialized
  to -1 because NO_IRQ indices start from 0 now

GPU:
- Fix IB_SIZE overflow

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://lore.kernel.org/r/CAF6AEGtVKXEVdzUzFWmQE8JmK3nx_hp+ynOd-5j3vnfcU-sgOA@mail.gmail.com
2025-04-19 15:09:29 +10:00
Dave Airlie
3748bef7b7 Driver Changes:
- Fix LRC address being written too late for GuC
 - Fix notifier vs folio deadlock
 - Fix race betwen dma_buf unmap and vram eviction
 - Fix debugfs handling PXP terminations unconditionally
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Merge tag 'drm-xe-fixes-2025-04-18' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

Driver Changes:
- Fix LRC address being written too late for GuC
- Fix notifier vs folio deadlock
- Fix race betwen dma_buf unmap and vram eviction
- Fix debugfs handling PXP terminations unconditionally

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/ndinq644zenywaaycxyfqqivsb2xer4z7err3dlpalbz33jfkm@ttabzsg6wnet
2025-04-19 14:59:52 +10:00
Linus Torvalds
8560697b23 smb client fixes
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Merge tag '6.15-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Fix hard link lease key problem when close is deferred

 - Revert the socket lockdep/refcount workarounds done in cifs.ko now
   that it is fixed at the socket layer

* tag '6.15-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  Revert "smb: client: fix TCP timers deadlock after rmmod"
  Revert "smb: client: Fix netns refcount imbalance causing leaks and use-after-free"
  smb3 client: fix open hardlink on deferred close file error
2025-04-18 20:10:42 -07:00
Rob Clark
9d78f02503 drm/msm/a6xx+: Don't let IB_SIZE overflow
IB_SIZE is only b0..b19.  Starting with a6xx gen3, additional fields
were added above the IB_SIZE.  Accidentially setting them can cause
badness.  Fix this by properly defining the CP_INDIRECT_BUFFER packet
and using the generated builder macro to ensure unintended bits are not
set.

v2: add missing type attribute for IB_BASE
v3: fix offset attribute in xml

Reported-by: Connor Abbott <cwabbott0@gmail.com>
Fixes: a83366ef19 ("drm/msm/a6xx: add A640/A650 to gpulist")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/643396/
2025-04-18 15:15:24 -07:00
Wolfram Sang
24aaced72a i2c-host-fixes for v6.15-rc3
- ChromeOS EC tunnel: fix potential NULL pointer dereference
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Merge tag 'i2c-host-fixes-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current

i2c-host-fixes for v6.15-rc3

- ChromeOS EC tunnel: fix potential NULL pointer dereference
2025-04-18 23:42:56 +02:00
Linus Torvalds
3088d26962 Miscellaneous x86 fixes:
- Fix hypercall detection on Xen guests
 
  - Extend the AMD microcode loader SHA check to Zen5,
    to block loading of any unreleased standalone
    Zen5 microcode patches
 
  - Add new Intel CPU model number for Bartlett Lake
 
  - Fix the workaround for AMD erratum 1054
 
  - Fix buggy early memory acceptance between
    SEV-SNP guests and the EFI stub
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:

 - Fix hypercall detection on Xen guests

 - Extend the AMD microcode loader SHA check to Zen5, to block loading
   of any unreleased standalone Zen5 microcode patches

 - Add new Intel CPU model number for Bartlett Lake

 - Fix the workaround for AMD erratum 1054

 - Fix buggy early memory acceptance between SEV-SNP guests and the EFI
   stub

* tag 'x86-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot/sev: Avoid shared GHCB page for early memory acceptance
  x86/cpu/amd: Fix workaround for erratum 1054
  x86/cpu: Add CPU model number for Bartlett Lake CPUs with Raptor Cove cores
  x86/microcode/AMD: Extend the SHA check to Zen5, block loading of any unreleased standalone Zen5 microcode patches
  x86/xen: Fix __xen_hypercall_setfunc()
2025-04-18 14:04:57 -07:00
Linus Torvalds
ac85740edf Fix a lockdep false positive in the i8253 driver.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix a lockdep false positive in the i8253 driver"

* tag 'timers-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/i8253: Call clockevent_i8253_disable() with interrupts disabled
2025-04-18 14:02:45 -07:00
Linus Torvalds
b372359fbc Miscellaneous fixes and a hardware-enabling change:
- Fix Intel uncore PMU IIO free running counters on
    SPR, ICX and SNR systems.
 
  - Fix Intel PEBS buffer overflow handling
 
  - Fix skid in Intel PEBS sampling of user-space
    general purpose registers
 
  - Enable Panther Lake PMU support - similar to Lunar Lake.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 perf event fixes from Ingo Molnar:
 "Miscellaneous fixes and a hardware-enabling change:

   - Fix Intel uncore PMU IIO free running counters on SPR, ICX and SNR
     systems

   - Fix Intel PEBS buffer overflow handling

   - Fix skid in Intel PEBS sampling of user-space general purpose
     registers

   - Enable Panther Lake PMU support - similar to Lunar Lake"

* tag 'perf-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Add Panther Lake support
  perf/x86/intel: Allow to update user space GPRs from PEBS records
  perf/x86/intel: Don't clear perf metrics overflow bit unconditionally
  perf/x86/intel/uncore: Fix the scale of IIO free running counters on SPR
  perf/x86/intel/uncore: Fix the scale of IIO free running counters on ICX
  perf/x86/intel/uncore: Fix the scale of IIO free running counters on SNR
2025-04-18 13:35:13 -07:00
Linus Torvalds
b0c3bc35a5 Miscellaneous fixes:
- Fix BCM2712 irqchip driver Kconfig dependencies
    required on the Raspberry PI5
 
  - Fix spurious interrupts on RZ/G3E SMARC EVK systems
 
  - Fix crash regression on Sun/NIU hardware
 
  - Apply MSI driver quirk for Sun Neptune chips
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc irq fixes from Ingo Molnar:

 - Fix BCM2712 irqchip driver Kconfig dependencies required on the
   Raspberry PI5

 - Fix spurious interrupts on RZ/G3E SMARC EVK systems

 - Fix crash regression on Sun/NIU hardware

 - Apply MSI driver quirk for Sun Neptune chips

* tag 'irq-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/irq-bcm2712-mip: Enable driver when ARCH_BCM2835 is enabled
  irqchip/renesas-rzv2h: Prevent TINT spurious interrupt
  net/niu: Niu requires MSIX ENTRY_DATA fields touch before entry reads
  PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads
2025-04-18 13:28:41 -07:00
Linus Torvalds
84aca3ca6a Fix a genksyms related bug, triggered by recent changes to the percpu
code, and update the .clang-format file to not include obsolete
 function names.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'core-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc core fixes from Ingo Molnar:
 "Fix a genksyms related bug, triggered by recent changes to the percpu
  code, and update the .clang-format file to not include obsolete
  function names"

* tag 'core-urgent-2025-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genksyms: Handle typeof_unqual keyword and __seg_{fs,gs} qualifiers
  clang-format: Update the ForEachMacros list for v6.15-rc1
2025-04-18 13:25:33 -07:00
Linus Torvalds
3bf8a4598f hardening fixes for v6.15-rc3
- lib/prime_numbers: KUnit test should not select PRIME_NUMBERS
   (Geert Uytterhoeven)
 
 - ubsan: Fix panic from test_ubsan_out_of_bounds (Mostafa Saleh)
 
 - ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP (Nathan Chancellor)
 
 - string: Add load_unaligned_zeropad() code path to sized_strscpy()
   (Peter Collingbourne)
 
 - kasan: Add strscpy() test to trigger tag fault on arm64 (Vincenzo
   Frascino)
 
 - Disable GCC randstruct for COMPILE_TEST
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Merge tag 'hardening-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - lib/prime_numbers: KUnit test should not select PRIME_NUMBERS (Geert
   Uytterhoeven)

 - ubsan: Fix panic from test_ubsan_out_of_bounds (Mostafa Saleh)

 - ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP (Nathan
   Chancellor)

 - string: Add load_unaligned_zeropad() code path to sized_strscpy()
   (Peter Collingbourne)

 - kasan: Add strscpy() test to trigger tag fault on arm64 (Vincenzo
   Frascino)

 - Disable GCC randstruct for COMPILE_TEST

* tag 'hardening-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lib/prime_numbers: KUnit test should not select PRIME_NUMBERS
  ubsan: Fix panic from test_ubsan_out_of_bounds
  lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP
  hardening: Disable GCC randstruct for COMPILE_TEST
  kasan: Add strscpy() test to trigger tag fault on arm64
  string: Add load_unaligned_zeropad() code path to sized_strscpy()
2025-04-18 13:20:20 -07:00
Linus Torvalds
30d451e373 gpio fixes for v6.15-rc3
- check for both the new AND old (deprecated) setter callback when
   changing GPIO direction to output
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Merge tag 'gpio-fixes-for-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fix from Bartosz Golaszewski:

 - check for both the new AND old (deprecated) setter callback when
   changing GPIO direction to output

* tag 'gpio-fixes-for-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpiolib: Allow to use setters with return value for output-only gpios
2025-04-18 13:18:01 -07:00
Linus Torvalds
fe65616bf8 Thermal control fixes for 6.15-rc3
Add missing DVFS support flags for the Lunar Lake and Panther Lake
 platforms to the int340x Intel thermal driver and fix DLVR support
 for Panther Lake in it (Srinivas Pandruvada).
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Merge tag 'thermal-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fixes from Rafael Wysocki:
 "Add missing DVFS support flags for the Lunar Lake and Panther Lake
  platforms to the int340x Intel thermal driver and fix DLVR support
  for Panther Lake in it (Srinivas Pandruvada)"

* tag 'thermal-6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: int340x: Fix Panther Lake DLVR support
  thermal: intel: int340x: Add missing DVFS support flags
2025-04-18 13:09:20 -07:00